Hallar el valor numerico de las siguientes expresiones algeb,,raicas para: a = 1, b = 2, c =3, d = 4, e = 2/3, f = 1/2, g = 3/4, h = 0.

. (b-a)g-f =

. ( e-12f) (c-g) + 4h² =

. (2a+8f) (a²+b²) (2g-d) =

. (4f+8a) (e²+b²) (3g-b) =​

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

597

step-by-step explanation: